#include <iostream>
using namespace std;
int main(){
	char ch1= 'a' , ch2 = 27 ;
	cout << ch1 << endl << ch2 << endl;
	ch1 = ch1 + 1;
	ch2 = ch2 - 6;
	cout << ch1 << endl << ch2 << endl;
	return 0;
}
